Hydrodynamical Models of Elliptical Galaxies
Hydrodynamical models of elliptical galaxies can be obtained by means of Jeans’equations (see for example Ortega and de Freitas Pacheco, 1986). Following this approach, we consider a mass distribution in steady state which approximates de Vaucouleurs’ r1/4 law, and assume the principal axes of the velocity distribution to be parallel to unitary vectors in cylindrical and spherical coordinates, with the ratio between dispersions in different directions a constant or a function of position.
KeywordsVelocity Distribution Mass Distribution Hydrodynamical Model Velocity Dispersion Celestial Mechanics
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